Table 2.

Evaluation of the independent effect of EASIX score and ferritin level on CRS grades 2 to 4

	Parameters
Risk group	EASIX	Ferritin	n*	Events, n	CumInc, %	HR	95% CI	P
High risk	High	Any level	35	26	74	4.8	2.1-11	<.001
Intermediate risk	Low	High ferritin	72	35	49	2.3	1.02-5	.04
Low risk	Low	Low ferritin	34	8	23	1.0	—	—

High EASIX: levels in the upper quartile (EASIX >4.6); high ferritin: levels above the lowest quartile (ferritin >321 ng/mL); high vs intermediate risk groups: HR, 2.1; 95% CI, 1.3-3.5; P = 0.003. CumInc, cumulative incidence; ECOG, Eastern Cooperative Oncology Group. *Only patients with available ferritin levels were eligible for this analysis.